blowback
/ˈbləʊbæk/noun
1
- a process in which gases expand or travel in a direction opposite to the usual one, especially through escape of pressure or delayed combustion（气体膨胀后的）回吹, 气流逆吹。
2
- chiefly US the unintended adverse results of a political action or situation〈主美〉（政治行动或局势的）意料之外的不良效果（或影响）：
this is the blowback from all those aggressive public health campaigns.
这就是那些冒进的公共卫生运动所造成的出乎人们意料的不良后果。